burdsall



2 sheets-sheet 1.

(No Model.)

E.' BURDSALL, Jr. BOLT HEADING MACHINE Pqtentedneo. 1.7, 1889.

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E. BURD-SALL, J1.y BOLT- HEADING MACHINE.

l No. M1538. Patented Deo. 175, 1889.

www 4@ fw l UNITED STATES PATENT OFFICE.

ELLWOOD BURDSALL, JR., OF PORT CHESTER, NEW YORK, ASSIGNOR OF ONE-HALF TO RICHARD H. BURDSALL, OF SAME PLACE.

BOLT-H EADING MACHIN E.

SPECIFICATION forming part of Letters Patent No. 417,538, dated December 17, 1889.

Application filed October 8, 1889. Serial No. 326,339. (No model.)

To all whom it may concern.-

Be it known that I, ELLwooD BURDsALL, J r., a citizen of the United States, residing at Port Chester, in the county of Westchester and State of New York, have invented certain new and useful Improvements in Bolt- Heading Machines; and I do hereby declare the" following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to the class of machines illustrated and described in Letters Patent No. 399,828, granted to me March 19, 1889, and has for its object to so improve the machine that the length of the blanks cut from thewire fed to the machine and the length of the bolts, after being headed thereby, will be correctly shown at all times.

With these ends in view I have provided indicators constructed and arranged to operate in connection with the ordinary stops of the machine, each indicator being necessarily moved when its corresponding stop is moved, so as to show the change made in the length of the blank orl the headed bolt by the change.

in the adjustment of the stop. Itis of course well understood by those familiar with the manufacture of bolts just what lengths of blanks are required to form kdifferent sizes of bolts. f

Heretofore in adapting a machine to make different sizes of bolts considerable time has been lost in tentative adjustments. Suppose in starting an ordinary machine that it is desired to make a certain length of bolt. It may or may not be known just what sized' bolts the machine was making last. Unless the size is known it is necessary to run off a few to determine the size,'and then to adjust the stops experimentally until the desired size of bolts with perfectly-formed heads is produced. It will of course be understood that the size and shape of the heads are determined by the shape of the recess inthe heading-die. `It is necessary, however, to provide just sufficient metal to fill the die. If the quantity of metal allowed for the heads is insufficient, the heads will be imperfectly formed and the bolts useless. If more metal is allowed than is required to make a bolt-head, the machine is strained and is liable toA be broken.

My present invention is applicable to all bolt-heading machines of this general class, and is found vin practice to whollyobviate the serious objection specified, it being perfectly easy to adjust the stops with accuracy and without any loss of time whatever in experi-v mental adjustments.

For the sake of clearness in illustration I have shown my invention as applied in connection with the machine illustrated in my said former patent, this single illustration being deemed amply sufficient for the purposes of this specification.

In the accompanying drawings, Figure 1 is a longitudinal section of the entire machine on the line of the tube through which the wire is fed, showing in elevation thc mechanism for adjusting the stop which determines the length of the blanks and the indicator for showing the length of blanks produced by the adjustment', Fig. 2, an elevation of said mechanism detached, as seen from the opposite point of view to that in Fig. l; Fig. 3, a section on the line :c a' in Fig. 2, looking down, showing the scale in plan; Fig. 4, a section on the line y y in Fig. 2, looking down, a portion of the receiver being broken away to show the pinions which adjust the stop; Fig. 5, a section on the linee e in Fig. 3, looking toward the right; Fig.A 6, a section on the line s s in Fig. 3; Fig. 7 ,a longitudinal section of the entire machine on the line of the heading mechanism, showing the mechanism for adjusting the stop which determines the size of the headed bolt-s and the indicator for showing the size of bolts formed by the adjustment; Fig. 8, a sectional View, on an enlarged scale, illustrating the indicator mechanism detached; and Fig. 9 is a plan view corresponding with Fig. 8.

1 denotes the bed or frame of the machine; 2, the shaft, to which power is applied by a belt (not shown) ruiming over a wheel 3 on the shaft.

The movements of the several parts of the machine are all imparted from shaft 2 by means of crank-pins at the ends of said shaft and an eccentric and strap at the center,

thereof.

4 and 5 denote, respectively, the upper and lower feed-rollers, which are provided with the usual grooves in their edges and hold the IOO l wire with sufficient pressure to feed it forward positively. As the wire is fed forward it passes through a tube G, rigidly secured in the frame-work, then through a tube 7, rigidly secured in a die-block 8, and then through a short tube 9, made of tempered steel, which serves as the stationary member of the cutting device.

10 denotes the movable cutter, which reciprocates in a guide l1 and acts in connection with tube 9 to cut bolt-blanks from the piece of wire fed into the tubes by the feedrollers.

As the special operation of the feeding and cutting mechanisms has nothing to do with my present invention, it is not considered to require detailed illustration or description. As the wire is fed forward through tube 9 it passes into a receiver 12, which is provided with a slot 13 on its inner side. (See Fig. 2.) The length of wire allowed for each bolt is regulated by means of an adjustable stop14, lying in a recess in the receiver, against which the end of the wire is forced as it is fed forward. This stop is screw-threaded, and is held against rotation by a key 15, which engages a groove 16 in the stop.

17 is a pinion socketed in the receiver and provided with an internal screw-thread engaged by the thread on the stop which passes through it. Pinion 17 is operated to move the stop either forward or backward by means of a pinion 18, carried by a shaft 19. At the end of shaft 19 is a beveled pinion 20, engaging a corresponding beveled pinion on a vertical shaft 21. This shaft lies within a tube 22, the upper end of which is slotted and which is engaged by a lock-nut 23, which clamps the slotted end of the tube firmly upon shaft 2l, thereby locking it after adjustment. At the upper end of said shaft is a linger-wheel 24 for convenience in manipulation. It will be seen that rotation of the vertical shaft must act to move the stop either in or out through the engagement of the beveled pinions and pinions 17 and 18, thereby determining the length of the blank allowed for each bolt. The operation of this adjustment will be apparent from the fact that pinion 17, which engages the stop, being socketed in the receiver, is held against endwise movement, and the stop is locked by the groove and key against rotary movement, so that when the finger-wheel is rotated the stop lnust be moved longitudinally. Tube 22, through which the vertical shaft passes, is enlarged near the middle thereof to form an opening 25.

2G denotes a beveled pinion on shaft 2l, lying in said opening, and 27 a beveled pinion on a horizontal shaft 28, meshing therewith. Shaft 28 lies in a case 29, which is providedwith a slot 30 in the upper side thereof. This shaft is held against endwise movement in the case by a collar 31, and is screwthreaded from end to end within the ease. Upon the top of the case, which is preferably made integral with the tube, is a scale 32, Whose graduations correspond-with the different lengths of blanks within the capacity of the machine.

33 is an indicator carried by a sleeve 34, which is internally screw-threaded to receive the thread upon shaft 28. The upper end of the indicator passes through slot 30 and is curved over the top of the scale, so as to register with the graduations thereon. (See Figs. 3, 5, and 6.) It will be seen that whenever shaft 21 is turned to change the position of stop 14 indicator 33 will also be moved to correspond therewith, so that, liavingbeen once adjusted properly, the position of the indicator upon the scale will show with absolute accuracy the length of blanks cut from the wire as the machine is then adjusted. If the stop is moved in either direction to increase or diminish the quantity of wire fed forward at each actuation of the machine, the indicator will be correspondingly moved over the scale and will show the lexact length of the blanks produced.

The operation of this portionof the machine is as follows: Having adjusted the stops, as already explained, power 'is applied and the machine placed in operation. The wire isfed forward and passes into the receiver until the end strikes stop 14. The movable cutter then acts-to sever the piece of wire in the receiver-1'. e., the blank from the main piece of wire. After the blank from which to form a bolt has been severed it is carried by suitable mechanism, which forms no portion of my present invention, out of the receiver through slot 13 and into .position to be acted upon by the heading mechanism.

35 denotes the heading-die, which is secured to die-block 8 by set-screws 3G.

37 is the header, carried by a ram, (designated as a whole by 38,) the special construction thereof forming no portion of my present invention.

Just back of the heading-die (see Fig. 7) is a tube 39, preferably made of chilled-steel and held in an independent block, which is itself socketed in the die-block. Thistube receives the blank as it is moved backward in the act ofy heading. Backv of tube 39 isa tube 40, also socketed in the die-block, which receives the end of the blank and also the reduced end 41 of a plunger 42, which reciprocates in an opening43 in the bed and in a guide 44, rigidly secured to the bed.-

Back of the plunger and in line therewith is an adjustable stop 45, carried by slide 46. This stop is externally screw-threaded, and is held against rotation by a key 47, which engages a groove (see dotted lines in Fig 7) in the stop.

48 is a pinion socketed in the slide and provided with an internal screw-thread engaged by the thread on the stop which passes through it. Pinion 48 is operated to move said stop either forward or backward by means of a IOO IIO

' the receiver.

pinion 49, also socketed in the slide and carried by a shaft 50, to which it is secured by a spline 54, so as to rotate therewith, but still be free to move longitudinally thereon as the slide itself moves during the operation of heading a bolt.

51 is a hand-wheel at the outer end of shaft 50 for convenience in adjusting the stop. The adjustment of this stop is substantially the same as the adjustment of the stop in Pinion 48 is socketed in the slide, so as to have no endwise movement, and the stop is keyed to the slide, so that it can have no rotary movement. It will be noticed that the portion of the slide in which pinions 48 and 49 are placed is considerably enlarged to accommodate the pinions, this enlarged portion of the slide lying in a recess 52 in the bed, which is made sufliciently large to permit the necessary movements of the slide. Shaft 50 is held against longitudinal movement by a collar 53 so that whenever said shaft is turned the two pinions are operated thereby to adj ust the stop, pinion 49 sliding freely on the shaft when the stop, slide, &c.,\move backward or forward.

55 denotes a pinion on shaft 50, which meshes with a pinion 56 on a shaft 57. This shaft and pinion are inclosed in a case58, secured to the top of the frame-Work in any suitable manner and having a slot 59 in its upper side. Shaft 57 is held against longitudinal movement by collars 60, and is provided with a longitudinal screw-thread within the case.

6l is an indicator carried by a sleeve 62, which is internally screw-threaded to receive the thread on shaft 57. The upper end of the indicator passes through slot 59 and is curved over the top of the case, so as to register with ascale 63 on the top of the case, (see Figs. S and 9,) whose graduations correspond with the different sizes of bolts within the capacity of the machine. It will be seen that whenever shaft 57 is turned in either direction to change the position of stop 45 indicator 61 must also be moved to correspond therewith, so that the exact size of the completed bolts headed by the machine is at all times correctly shown.

In changing from one size of bolts to another, provided the shape of the head is not changed, it is simply necessary to turn handwheel 5l until indicator 6l registers upon scale 63 the size of bolts that it is desired to make, and to turn finger-wheel 24 on shaft 2l until indicator 33 registers upon scale 32 the well-known length of blanks required to make the desired size of bolts.

As already stated, my invention is applicable to any of the various bolt-heading machines of this general class. I have not,

therefore, entered into any detailed description of the general operation of a bolt-heading machine, but have simply described so much ofthe operation as seemed necessary to fully illustrate mypresent invention, using for the purpose of illustration the machine upon which my said former Letters Patent were granted.

I-Iaving thus described my invention, I claiml. The combination, in a bolt-heading machine, of an adjustable stop for determining Vthe length of blanks, an indicator moving in exact relation thereto, and a scale for showing the length of blanks produced at any adjustment of the stop.

2. The combination, in a bolt-heading 'machine, of an adjustable stop for gaging the size of bolts, an indicator moving in exact relation thereto, and a scale graduated to the sizes of bolts produced by the machine.

3. In a machine of the class described, the combination, with a stop for determining the length of the blanks, and mechanism, substantially as described and shown, for adjusting said stop, of a scale corresponding with lengths of blanks, an indicator adapted to register with said scale, and intermediate mechanism, substantially as described and shown, whereby said indicator is moved by the stop-adjusting mechanism to show the length of blanks-produced by the adjustment.

4. The'combination, with receiver l2, adjustable stop 14, shaft 2l, and shaft 19, and intermediate pinions whereby the stop is controlled, of a beveled pinion 2G on shaft 2l, longitudinally-t-hreaded shaft 28, having a beveled pinion engaging pinion 26, a scale, and an indicator carried by a sleeve engaging the thread on shaft 28, whereby, when the adjustment of the stop is changed, the indicator is moved also and shows upon the scale the length of blanks produced by the adjustment. V

5. The combination,- with longitudinallythreaded stop 45, for determining the size of headed bolts, socketed pinion 48, internally threaded to engage said stop, and socketed pinion 49, engaging therewith, of shaft 50, carrying pinion 49, but free to slide longitudinally relatively to said pinion, and having also a pinion 55, longitudinally-threaded shaft 57, having va pinion engaging pinion `55, a scale corresponding to the lengths of headed bolts, and an indicator carried by a sleeve engaging the longitudinally-threaded shaft and acting in connection with the scale-marks to show the lengthof headed bolts produced by the adjustment of the stop.

In testimony whereof I affix my signature in presence of two witnesses.

ELLWOOD BURDSALL, Jn. lVitnesses:

JOSEPH HAIGHT, .I r., JosnPH H. MARSHALL.

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